ata_raid_promise.c revision 1.5
1 /* $NetBSD: ata_raid_promise.c,v 1.5 2005/02/27 00:26:58 perry Exp $ */ 2 3 /*- 4 * Copyright (c) 2000,2001,2002 Sren Schmidt <sos (at) FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer, 12 * without modification, immediately at the beginning of the file. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. The name of the author may not be used to endorse or promote products 17 * derived from this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 /* 32 * Support for parsing Promise ATA RAID controller configuration blocks. 33 * 34 * Adapted to NetBSD by Jason R. Thorpe of Wasabi Systems, Inc. 35 */ 36 37 #include <sys/cdefs.h> 38 __KERNEL_RCSID(0, "$NetBSD: ata_raid_promise.c,v 1.5 2005/02/27 00:26:58 perry Exp $"); 39 40 #include <sys/param.h> 41 #include <sys/buf.h> 42 #include <sys/bufq.h> 43 #include <sys/conf.h> 44 #include <sys/device.h> 45 #include <sys/disk.h> 46 #include <sys/disklabel.h> 47 #include <sys/fcntl.h> 48 #include <sys/malloc.h> 49 #include <sys/vnode.h> 50 51 #include <miscfs/specfs/specdev.h> 52 53 #include <dev/ata/atareg.h> 54 #include <dev/ata/atavar.h> 55 #include <dev/ata/wdvar.h> 56 57 #include <dev/ata/ata_raidreg.h> 58 #include <dev/ata/ata_raidvar.h> 59 60 #ifdef ATA_RAID_DEBUG 61 #define DPRINTF(x) printf x 62 #else 63 #define DPRINTF(x) /* nothing */ 64 #endif 65 66 int 67 ata_raid_read_config_promise(struct wd_softc *sc) 68 { 69 struct promise_raid_conf *info; 70 struct vnode *vp; 71 int bmajor, error, count; 72 u_int disk; 73 dev_t dev; 74 uint32_t cksum, *ckptr; 75 struct ataraid_array_info *aai; 76 struct ataraid_disk_info *adi; 77 78 info = malloc(sizeof(*info), M_DEVBUF, M_WAITOK); 79 80 bmajor = devsw_name2blk(sc->sc_dev.dv_xname, NULL, 0); 81 82 /* Get a vnode for the raw partition of this disk. */ 83 dev = MAKEDISKDEV(bmajor, sc->sc_dev.dv_unit, RAW_PART); 84 error = bdevvp(dev, &vp); 85 if (error) 86 goto out; 87 88 error = VOP_OPEN(vp, FREAD, NOCRED, 0); 89 if (error) { 90 vput(vp); 91 goto out; 92 } 93 94 error = ata_raid_config_block_rw(vp, PR_LBA(sc), info, 95 sizeof(*info), B_READ); 96 vput(vp); 97 if (error) { 98 printf("%s: error %d reading Promise config block\n", 99 sc->sc_dev.dv_xname, error); 100 goto out; 101 } 102 103 /* Check the signature. */ 104 if (strncmp(info->promise_id, PR_MAGIC, sizeof(PR_MAGIC)) != 0) { 105 DPRINTF(("%s: Promise signature check failed\n", 106 sc->sc_dev.dv_xname)); 107 error = ESRCH; 108 goto out; 109 } 110 111 /* Verify the checksum. */ 112 for (cksum = 0, ckptr = (uint32_t *) info, count = 0; count < 511; 113 count++) 114 cksum += *ckptr++; 115 if (cksum != *ckptr) { 116 DPRINTF(("%s: Promise checksum failed\n", sc->sc_dev.dv_xname)); 117 error = ESRCH; 118 goto out; 119 } 120 121 if (info->raid.integrity != PR_I_VALID) { 122 DPRINTF(("%s: Promise config block marked invalid\n", 123 sc->sc_dev.dv_xname)); 124 error = ESRCH; 125 goto out; 126 } 127 128 /* 129 * Lookup or allocate a new array info structure for 130 * this array. 131 */ 132 aai = ata_raid_get_array_info(ATA_RAID_TYPE_PROMISE, 133 info->raid.array_number); 134 135 if (info->raid.generation == 0 || 136 info->raid.generation > aai->aai_generation) { 137 aai->aai_generation = info->raid.generation; 138 /* aai_type and aai_arrayno filled in already */ 139 if ((info->raid.status & 140 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) == 141 (PR_S_VALID | PR_S_ONLINE | PR_S_INITED | PR_S_READY)) { 142 aai->aai_status |= AAI_S_READY; 143 if (info->raid.status & PR_S_DEGRADED) 144 aai->aai_status |= AAI_S_DEGRADED; 145 } else 146 aai->aai_status &= ~AAI_S_READY; 147 148 switch (info->raid.type) { 149 case PR_T_RAID0: 150 aai->aai_level = AAI_L_RAID0; 151 break; 152 153 case PR_T_RAID1: 154 aai->aai_level = AAI_L_RAID1; 155 if (info->raid.array_width > 1) 156 aai->aai_level |= AAI_L_RAID0; 157 break; 158 159 case PR_T_SPAN: 160 aai->aai_level = AAI_L_SPAN; 161 break; 162 163 default: 164 printf("%s: unknown Promise RAID type 0x%02x\n", 165 sc->sc_dev.dv_xname, info->raid.type); 166 error = EINVAL; 167 goto out; 168 } 169 170 aai->aai_interleave = 1U << info->raid.stripe_shift; 171 aai->aai_width = info->raid.array_width; 172 aai->aai_ndisks = info->raid.total_disks; 173 aai->aai_heads = info->raid.heads + 1; 174 aai->aai_sectors = info->raid.sectors; 175 aai->aai_cylinders = info->raid.cylinders + 1; 176 aai->aai_capacity = info->raid.total_sectors; 177 aai->aai_offset = 0; 178 aai->aai_reserved = 63; 179 180 for (disk = 0; disk < aai->aai_ndisks; disk++) { 181 adi = &aai->aai_disks[disk]; 182 adi->adi_status = 0; 183 if (info->raid.disk[disk].flags & PR_F_ONLINE) 184 adi->adi_status |= ADI_S_ONLINE; 185 if (info->raid.disk[disk].flags & PR_F_ASSIGNED) 186 adi->adi_status |= ADI_S_ASSIGNED; 187 if (info->raid.disk[disk].flags & PR_F_SPARE) { 188 adi->adi_status &= ~ADI_S_ONLINE; 189 adi->adi_status |= ADI_S_SPARE; 190 } 191 if (info->raid.disk[disk].flags & 192 (PR_F_REDIR | PR_F_DOWN)) 193 adi->adi_status &= ~ADI_S_ONLINE; 194 } 195 } 196 adi = &aai->aai_disks[info->raid.disk_number]; 197 if (adi->adi_status) { 198 adi->adi_dev = &sc->sc_dev; 199 adi->adi_sectors = info->raid.disk_sectors; 200 adi->adi_compsize = sc->sc_capacity - aai->aai_reserved; 201 } 202 203 error = 0; 204 205 out: 206 free(info, M_DEVBUF); 207 return (error); 208 } 209
Indexes created Thu Sep 25 16:09:42 GMT 2025